One Design Parts

Recreational sailors rejoice! The ISCA Mainsheet Swivel Cleat is a popular upgrade for the casual ISCA sailor, with a 360-degree rotating swivel base with integrated cleat. This allows easy cleating and un-cleating from any angle and offers great...

ISCA traveler block.   This is an official International Sunfish Class Association™ (ISCA®) class approved fitting. Zim Sailing is the exclusive manufacturer and distributor of the ISCA® Boat and Equipment. Boats and Equipment sold by...

Fiberglass daggerboard for the ISCA sailboat. This is the standard for all racing sailors.  ISCA Daggerboard Fiberglass Construction Zim Sailing Part # 48107   This is an official International Sunfish Class Association™ (ISCA®)...

Official class approved lower boom for the ISCA sailboat. Designed for the club or recreational sailor, this lower boom includes end caps and standard Racelite mainsheet blocks. ISCA Lower Boom Includes end caps and mainsheet blocks Includes standard...

Official class approved upper boom for the ISCA sailboat. This upper boom includes end caps and is standard on all Zim ISCA Race and Club sailboats. ISCA Lower Boom Includes end caps Aluminum construction  Zim Sailing Part # 48142 Freight Shipping...

Rudder Cheek for the ISCA sailboat. This is an updated design found exclusively at Zim Sailing, offering stronger, more durable plastic for long life. Includes pintle pin and spring.  Rudder Cheek Includes Pintle Pin & Spring Zim Sailing Part #...

Official replacement bailer cap for ISCA sailboats. This is the 'short' style 13/16 inch cap found commonly on boats produced since 1972 and standard on all new Zim ISCA sailboats. This is the cap only. 13/16″ in length Official replacement...

Standard 2 loop traveler bridle for ISCA sailboats. Made from a marine grade stainless wire with vinyl coating for long life. Attaches to traveler fairleads and provides a place for tying off or securing your mainsheet. Standard on all new Zim ISCA...

Replacement metal bow handle for ISCA sailboats. Mounted to the bow of the ISCA, the bow handle provides a handy lift point for your boat and place to tie off a line. Mounts to the deck with screws (not included). Official ISCA replacement fitting Zim...

Replacement bailer o rings for ISCA sailboats. The o ring helps to provide a watertight seal between the bailer and the boat, preventing leaks. Sold as a 5 pack and a great item to keep in your spare parts bag! ISCA bailer o rings Sold in a 5 pack Zim...

Replacement boom block with swivel for ISCA sailboat booms. This is the standard Race Lite version. ISCA Boom Block w/ Swivel Zim Sailing Part # 48160   This is an official International Sunfish Class Association™ (ISCA®) class approved...

Replacement boom block for ISCA sailboat booms. This is the standard Race Lite version that is fixed (ie, does not swivel). ISCA Boom Block (Fixed) Zim Sailing Part # 48159   This is an official International Sunfish Class Association™...